広島大学大学院人間社会科学研究科紀要. 教育学研究 5 号
2024-12-20 発行

河床堆積物の礫径変化と学生の持つ誤概念について : 瀬野川を対象として

Students’ Misconceptions about Changes in Gravel Diameter in Dry Riverbed Sediments: Survey results for the Seno-gawa river
全文
140 MB
BullGradSchHumanitSocSciHUStuEdu_5_28.pdf
Abstract
A field survey of changes in grain size of dry riverbed gravels was conducted with university students in the Seno River. The field survey results showed that gravels diameter tended to be smaller and rounder to downstream, and most students concluded that this reason was due to ‘crushing and abrasion’, based on what they had learnt in primary school, where large gravels were crushed and made smaller and rounder as they rolled and moved downstream. In order for gravels to undergo ‘crushing and abrasion’, they must first be transported across the riverbed. This requires ‘selective transport’, in which smaller particles are selectively transpoted. In order to understand how river work and to grasp the situation, it is important to consider many aspects of the river through observation.
著者キーワード
River
Gravel
Diameter
Change
Seno-gawa River
河川
直径
変化
瀬野川
権利情報
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140 MB